The Sky Lands: Cursed

Amber always did what anybody told her to do. She knew to listen, and that phoenixes were nothing more than messengers. More importantly, Amber knew to never trust a dragon with Curse of the Skies, where the dragon can transform into a phoenix.
But, of course, one of Amber's favorite dragons, her great grandmother Tourmaline, is a Cursed Dragon.
Amber goes to stay with her great grandmother while her mother leaves on a trip. While with her, Amber learns a terrifying secret.

The phoenixes are tired of being only messengers for the dragons and are on the verge of war. Amber, with her friends, is doing all she can to stop the war before she is forced to choose a side and fight.